Java输入输出流方式(文件的复制)

FileInputStream inputStream = null;
FileOutputStream outputStream = null;

String sourceFilePath = "path/to/source/file";
String targetFilePath = "path/to/target/file";

try {
    inputStream = new FileInputStream(sourceFilePath);
    outputStream = new FileOutputStream(targetFilePath);
} catch (IOException e) {
    // 异常处理
}

int bytesRead;

try {
    byte[] buffer = new byte[1024]; // 创建缓冲区
    while ((bytesRead = inputStream.read(buffer)) != -1) {
        outputStream.write(buffer, 0, bytesRead); // 将读取到的数据写入目标文件
    }
} catch (IOException e) {
    // 异常处理
}

try {
    if (inputStream != null) {
        inputStream.close();
    }
    if (outputStream != null) {
        outputStream.close();
    }
} catch (IOException e) {
    // 异常处理
}

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileCopyExample {
    public static void main(String[] args) {
        String sourceFilePath = "path/to/source/file";
        String targetFilePath = "path/to/target/file";

        FileInputStream inputStream = null;
        FileOutputStream outputStream = null;

        try {
            inputStream = new FileInputStream(sourceFilePath);
            outputStream = new FileOutputStream(targetFilePath);

            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }

            System.out.println("文件复制成功！");
        } catch (IOException e) {
            System.out.println("文件复制失败：" + e.getMessage());
        } finally {
            try {
                if (inputStream != null) {
                    inputStream.close();
                }
                if (outputStream != null) {
                    outputStream.close();
                }
            } catch (IOException e) {
                System.out.println("关闭流失败：" + e.getMessage());
            }
        }
    }
}